Licht, Waerme, Strahlen / Magnetismus, Elektrizitaet, Induktion / Daemonen und Geister
Thermometer
Johann Georg Repsold, Hamburg, around 1826
This instrument determines temperature by measuring the expansion of mercury. The first thermometers were constructed in the seventeenth century, but scales are not standardized until the eighteenth century. In the nineteenth century their production is still a technical art.
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